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http://dx.doi.org/10.5207/JIEIE.2004.18.2.125

An Evaluation of Weather Model for Increasing Ampacity in KEPCO's Overhead Transmission Lines  

김성덕 (한밭대학교 전기ㆍ전자ㆍ제어공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.18, no.2, 2004 , pp. 125-134 More about this Journal
Abstract
The new deregulated economic environment in the power utility market is forcing fundamental changes in the investment and operational decisions regarding transmission lines. Hence, it has come to be an important issue to evaluate their current utility in order to increase conductor ampacity based on conservative assumptions of worst case weather conditions. Static thermal rating has born still applied in most power companies worldwide, however some of them have been done various trials such as monitoring dynamic line ratings to increase line ratings in real time. This study is an attempt to access the static line ratings in Korea Electric Power Corporation(KEPCO) transmission lines, which were specified by weather model. Several environmental performances for determining static line ratings are examined by using the past weather data of Korean Meteorological Administration. As a result, it is shown that seasonal or regional line ratings could be adopt to the KEPCO's transmission lines, and their line ratings could be more increased without refurbishing current conductors in service to new high-temperature ones.
Keywords
Ampacity; Static Line rating; Weather Model; Transmission Lines;
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